During a 6-year study of Musca autumnalis DeGeer population ecology in central Iowa, various ear-tag treatments were applied to cattle. Zero, one, or two tags impregnated with 10% permethrin or 13.7% stirofos were applied to cows at a cow/calf operation of between 250 and 350 head. The ecological studies permitted a test of the hypothesis of ear tag effectiveness without the bias of fly counts being associated with a particular treatment. The proportions of parous flies were used as an index of fly population age structure and were homogeneous among years. Thus adult survival rates were not detectably different. No effects of ear tags on face fly populations were detected.
Document Type: Research Article
Publication date: December 1, 1984
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.